Been watching a historic shows about space ships and landings around the world. The commentators made some very good evidence for life on earth. The building structures, the possibility of help from extraterrestrials to build them. It is very interesting, but the governments will never let us know for sure what they know. We have heavy equipment working daily and nothing that can move some of the blocks of stone across ground much less up a steep side of a building. Was people back then less smart than we are today? Lot of questions remain unanswered and we will most likely never know the answer. Speculation of what happen then and could it happen again today? Believe in extraterrestrials if you will, I will have to see one first. The movie where the extraterrestrial wanted to call home from earth, ET was it?